Robert Rudolph (http://www.robert-rudolph.com/) made several of these devices, roughly 2012 to 2014. The website http://psg.rudolphlabs.com/ has links to download code that was written for Processing 1.5.1. I have the code running on a Window 7 PC (haven’t tried the Arduino yet) under 1.5.1 but have various problems with the current version 3.3. If I find workarounds, I’ll note them on this site.
The webcam code is at http://webcamxtra.sourceforge.net/download.shtml but this seems the same as found above. At any rate, it doesn’t work any better with Processing 3.3.